large peg / stake / post / pillar

big / broad, immense

building, structure, construction, edifice

very; extremely / exceedingly; tremendously

extraordinary, unusual

emergency

an architectural structural element used in wooded temples that joins pillars and columns to the frame of a roof; used to shift the upper weight to pillar

(slang) adult fans of an anime, a manga aimed at children

stairs used in emergencies

state of emergency (unusually difficult or dangerous situation)